As for the source of the odor, it is probably the holes where the toilet bolts pass through the ceramic toilet bowl base, which are usually never sealed. The sewer gas that's wafting past the toilet wax gasket can easily seep past the bolts and the decorative caps.Jan 4, 2009,
An unused bathroom drain can begin to smell after a certain amount of time. This smell most often comes from tubs and sinks due to an unused plumbing trap, or P-trap. Plumbing traps are the U-shaped dips in the pipe underneath the bathroom drain.
Step 1: Mix 1/2 cup baking soda with 1/4 cup table salt. Step 2: Pour the mixture down the drain. Step 3: Pour 1 cup heated vinegar down your drain; the concoction is going to foam and bubble. Step 4: Let the solution stand for 15 minutes (longer does not work any better).
Cracked pipes: Degraded, broken or cracked pipes can allow sewer gas to escape through them and into your home. Leaks: Improperly placed pipes or vents can lead to leaks in your plumbing system, which in turn can cause sewer gas to escape inside your home.Jan 20, 2020
Applying a bead of silicone caulk around the base of the toilet keeps any sewer gas that happens to escape past the wax ring trapped underneath the base of the toilet, preventing you from having a sewer smell in the house. When applying the caulk, use waterproof caulk that holds up in a moist environment.
Seals Broken or Loose The toilet attaches to the drain with seals. If they are broken or loose, they will allow sewer gases into the home. If the seals are leaking water around the toilet, bacteria grows and creates a yucky smell.Dec 18, 2020
Fixing this problem is simple. Just run some water into the sink for a minute or so, and the problem is fixed. You can also add a little baking soda into the drains to eliminate any possibility of clogging.Mar 8, 2021
As for the source of the odor, it is probably the holes where the toilet bolts pass through the ceramic toilet bowl base, which are usually never sealed. The sewer gas that's wafting past the toilet wax gasket can easily seep past the bolts and the decorative caps.Jan 4, 2009